Price override in hook ActionProductPriceCalculation removes all taxes

[neoweiter]

Hi everyone

I made a module with this hook

    public function hookActionProductPriceCalculation($params)
    {
        if (empty($params['cart']) || !Validate::isLoadedObject($params['cart'])) {
            return;
        }

        $id_product = (int)$params['id_product'];

        $prices = PriceController::getStaticPrices($id_product); // Custom Class with new price calculation

        if ($prices && isset($prices['final_price'])) {
            $params['price'] = (float)$prices['final_price'];
        }
    }

this simply overrides all my products Tax Excl. prices in the Cart and in final Order.

This works well, but strangely the Cart Total does not count the Taxes anymore. My total Tax Incl. is the same as the total Tax Exc. amount like if the total tax was 0.00

Why is that ? How can I fix the total tax incl ?

Thanks

Edited October 11 by neoweiter (see edit history)

[ComGrafPL]

test with:

public function hookActionProductPriceCalculation($params)
{
    // Validate cart object
    if (empty($params['cart']) || !Validate::isLoadedObject($params['cart'])) {
        return;
    }

    $id_product = (int)$params['id_product'];
    
    // Get custom price from your PriceController
    $prices = PriceController::getStaticPrices($id_product);

    if ($prices && isset($prices['final_price'])) {
        $price_excl = (float)$prices['final_price']; // Assume this is tax-excluded price

        // Load product to get tax info
        $product = new Product($id_product);
        $taxCalculator = $product->getTaxCalculator($params['cart']->id_address_delivery);

        // Set tax-exclusive and tax-inclusive prices
        $params['price'] = $price_excl;
        $params['price_tax_exc'] = $price_excl;
        $params['price_tax_inc'] = $taxCalculator->getInclusivePrice($price_excl);
    }
}

 

[neoweiter]

Thanks for your reply. 

I tested it but with no success.

After some research, it seems that no hook can achieve this, as it's coming too late in the calculation process. (It comes after prestashop has already calculated taxes)

I'm trying now to do it by overriding Product::getPriceStatic method.

[neoweiter]

If it can help, I solved it by overriding the Product::priceCalculation method. I replaced $price with my new price calculation, just before the line

$price = $product_tax_calculator->addTaxes($price);

Maybe not the mot elegant, but it works, and I don't think there is another way of doing it with hooks as I tried them all.